The International Ljubljana Summer School in Computer Science is a 1 or 2-week programme based on different spectrums of IT science. It is organized and hosted by the Faculty of Computer and Information Science, University of Ljubljana, Slovenia. It is intended for international undergraduate and master’s students. The lectures will be given and discussed in English. The programme imparts knowledge with social activities by taking full advantage of Slovenia’s unique geographical position and natural beauty, from pebble beaches to snow-topped mountains.